The best way to prevent pneumonia is ....

http://edition.cnn.com/2017/04/04/health/pneumonia-disease-symptoms-causes-treatments/index.html

The best way to prevent pneumonia is to take advantage of vaccinations. Pneumonia often follows the flu, so getting a yearly flu vaccination is key.

For those in high-risk populations, three types of pneumonia vaccines are currently available: PCV13 or pneumococcal conjugate vaccine, which protects against a few serotypes of Streptococal bacteria; PPSV23 or pneumococcal polysaccharide vaccine, which protects against many more; and Hib, or Haemophilus influenzae type b vaccine.

Each has certain risks and recommendations, so check with your health care provider to be sure the vaccine is safe for you or your family.